<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true"
            >添加角色</el-button
          >
        </el-col>
      </el-row>

      <el-table :data="roleList" border stripe>
        <el-table-column type="expand" label="*">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRightById(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>

              <el-col :span="19">
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      >{{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
              @click="editDialog(scope.row.id)"
              >编辑</el-button
            >
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="removeRoles(scope.row.id)"
              >删除</el-button
            >
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 创建角色的对话框-->
    <el-dialog
      title="创建角色"
      :visible.sync="addDialogVisible"
      width="40%"
      @close="addDialogClosed"
    >
      <el-form
        :model="addRolesForm"
        :rules="RolesFormRules"
        ref="addRolesFormRef"
        label-width="100px"
      >
        <el-form-item label="角色名称" prop="roleName"
          ><el-input v-model="addRolesForm.roleName"></el-input
        ></el-form-item>

        <el-form-item label="角色描述" prop="roleDesc"
          ><el-input v-model="addRolesForm.roleDesc"></el-input
        ></el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRoles">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 编辑角色的对话框-->
    <el-dialog
      title="编辑角色"
      :visible.sync="editDialogVisible"
      width="40%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editRolesForm"
        :rules="RolesFormRules"
        ref="editRolesFormRef"
        label-width="100px"
      >
        <el-form-item label="角色名称" prop="roleName"
          ><el-input v-model="editRolesForm.roleName"></el-input
        ></el-form-item>

        <el-form-item label="角色描述" prop="roleDesc"
          ><el-input v-model="editRolesForm.roleDesc"></el-input
        ></el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoles">确 定</el-button>
      </span>
    </el-dialog>

    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <el-tree ref="treeRef" :data="rightsList" :props="treeProps" show-checkbox :default-checked-keys="defKeys" default-expand-all node-key="id"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights"
          >确 定</el-button
        >
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      roleList: [],
      addDialogVisible: false,
      addRolesForm: {},
      RolesFormRules: {
        roleName: [
          { required: true, message: '请输入角色名', trigger: 'blur' },
          {
            min: 2,
            max: 10,
            message: '长度应在 2 到 10 个字符之间',
            trigger: 'blur'
          }
        ],
        roleDesc: [
          { required: true, message: '请输入角色描述', trigger: 'blur' },
          {
            min: 1,
            max: 20,
            message: '长度应在 1 到 20 个字符之间',
            trigger: 'blur'
          }
        ]
      },
      editRolesForm: {},
      editDialogVisible: false,
      setRightDialogVisible: false,
      rightsList: [],
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      defKeys: [],
      roleId: ''
    }
  },
  created() {
    this.getRoleList()
  },
  methods: {
    async getRoleList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200)
        return this.$message.error('获取角色列表失败！')
      console.log(res)
      this.roleList = res.data
    },
    addDialogClosed() {
      this.$refs.addRolesFormRef.resetFields()
    },
    addRoles() {
      this.$refs.addRolesFormRef.validate(async valid => {
        if (!valid) return this.$message.error('创建角色失败！')
        const { data: res } = await this.$http.post('roles', {
          roleName: this.addRolesForm.roleName,
          roleDesc: this.addRolesForm.roleDesc
        })
        if (res.meta.status !== 201)
          return this.$message.error('创建角色失败！')
        this.$message.success('创建角色成功')
        this.addDialogVisible = false
        this.getRoleList()
      })
    },
    editDialogClosed() {
      this.$refs.editRolesFormRef.resetFields()
    },
    async editDialog(id) {
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status !== 200)
        return this.$message.error('查询用户信息失败！')
      this.editRolesForm = res.data
      this.editDialogVisible = true
    },
    async editRoles() {
      this.$refs.editRolesFormRef.validate(async valid => {
        if (!valid) return this.$message.error('编辑角色失败！')
        const { data: res } = await this.$http.put(
          'roles/' + this.editRolesForm.roleId,
          {
            roleName: this.editRolesForm.roleName,
            roleDesc: this.editRolesForm.roleDesc
          }
        )
        if (res.meta.status !== 200)
          return this.$message.error('编辑角色失败！')
        this.editDialogVisible = false
        this.$message.success('编辑角色成功')
        this.getRoleList()
      })
    },
    async removeRoles(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除角色, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      if (confirmResult !== 'confirm') {
        this.$message.info('已取消删除')
      } else {
        const { data: res } = await this.$http.delete('roles/' + id)
        if (res.meta.status !== 200)
          return this.$message.error('删除用户失败！')
        this.$message.success('删除用户成功了')
        this.getRoleList()
      }
    },
    async removeRightById(role, rightId) {
      const confirmResult = await this.$confirm(
        '此操作将删除角色指定权限, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      if (confirmResult !== 'confirm') return this.$message.info('取消了删除！')
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      )
      if (res.meta.status !== 200) return this.$message.error('删除权限失败！')
      this.$message.success('删除权限成功！')
      role.children = res.data
    },
    async showSetRightDialog(role) {
      this.roleId = role.id
      const {data: res} = await this.$http.get('rights/tree')
      if(res.meta.status !== 200) return this.$message.error('获取权限数据失败！')
      console.log(res)
      this.rightsList = res.data
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    getLeafKeys(node, arr) {
      if(!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => {
        this.getLeafKeys(item, arr)
      })
    },
    setRightDialogClosed() {
      this.defKeys = []
    },
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      console.log(keys)
      const idStr = keys.join(',')
      const {data :res} = await this.$http.post(`roles/${this.roleId}/rights`, {rids: idStr})
      console.log(res)
      if(res.meta.status !== 200) return this.$message.error('分配权限失败！')
      this.$message.success('分配权限成功！')
      this.getRoleList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
